David Gallo: The deep oceans: a ribbon of life

www.ted.com With vibrant video clips captured by submarines, David Gallo takes us to some of Earth's darkest, most violent, toxic and beautiful habitats, the valleys and volcanic ridges of the oceans' depths, where life is bizarre, resilient and shockingly abundant.

[@shyama5612]

The best of Ted I've to say. Amazing revelations about life's mysteries and the need for humility when approaching nature (must watch for ecowarriors and policy makers)

[@indagdnm]

I LOVE TED TALKS!!!

[@Fragenzeichenplatte]

you should bear in mind that we as land animals are living under a large pressure, too - the pressure of the atmosphere around us. I just read that the human body has to endure 5.5 tons of air!

[@kurtilein3]

i grew up with the metric system, so i dont get that point. For me whats fun about the metric system is that connections are so easy to make. one liter spread out over one square meter of surface leads to 1mm thickness. a cubic meter of water weighs 1 ton. So cars float, and only sink when the water fills it up completely. So if blood covers a surface area of about a square meter, someone is about to bleed to death. All the connections get really easy.

[@violentbenevolence]

absolutely fascinating.

[@tcpaa]

Great stuff

[@ColinFrayn]

They don't have gas inside their bodies like we do (our lungs and other air-filled cavities). They're basically just bags of liquid and solid chemicals. Liquids are not generally very compressible so the pressure doesn't affect them.

[@IslandHermit]

Their internals (blood, membranes, etc) are at that same pressure, so the internal and external pressures balance out.
That's why they disintegrate when we try to bring them up. The external pressure drops well below the pressure inside their bodies, so they basically explode.

[@akulol]

very interesting to watch!

[@TheCaveDudes]

awesome😃 👍

[@nevous8]

Can anyone tell me how these creatures aren't crushed under pressure?

[@0myjoe]

Lol lovin the X-wing death jelly ;)

[@kurtilein3]

okay, let me ask you this: how heavy is a 50 gallon aquarium, i mean, how much weight would the water add? in your system please. And then, density, how heavy does a cubed foot of volume need to be in pounds, in order to levitate in water?
if you spread out two gallons of liquid over a square yard, what is the thickness of the layer?
in the metric system, ALL THIS IS TRIVIAL and at school these calcultions are normal.

[@nevous8]

we are talking about hundreds to thousands of pounds of pressure though... how can a crab just withstand that... maybe i'm getting the definition of pressure wrong when you're that far deep as the scientists said that they just disintegrate when they travel towards water to land level?

[@roidroid]

6:26, is he actually suggesting that there is bacteria living IN the molten rock of the Earth's mantle?

[@consorharley2]

I found your comment rather shallow and pedantic. Does it really matter which units these guys used? Zoology doesn't require very much math. Their units are used as a point of comparison, and as such they work perfectly well. The PSI figure came from the submarine engineers, Celsius has no advantages over Fahrenheit unless you're dealing with water at 1 atm, miles and feet conflict for pressure calculations, but these guys only used feet to describe depth, so there's no conflict.

[@aarontrithwood]

Because it is easier for people to imagine

[@penguinworm]

I just don't understand how these fragile looking things aren't crushed from the pressure. What's different about their basic makeup?

[@kerron68]

I always wonder why organisations, such as NASA, spend billions on outer space explorations, when we've only looked at such a small percentage of our own planet. Shouldn't we first understand our own life forms before looking for others?

[@retsaoter]

looks more like a Tie fighter too me.

[@0myjoe]

o shit yh, i think he probs got the names mixed up lol

[@Linandemma]

probably the same reason our national speed limit is 60 mph

[@Yesios]

@kurtilein3 To get their own civilization confused. It's the same with the month/day/year system...

[@SwissMilk0]

I have made four mildly interesting videos, but you are welcome to see them, enjoy.

[@gabrielespinoza5956]

crabs no craps, the subtítulo is wrong

[@Ponysalad]

1:15....boing, boing, boing, boing, boing :D

[@ChaChinnngK]

Oh go bore people somewhere else